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Chengdu Ebyte Electronic Technology Co.,Ltd.

E49-900M20S user manual

Copyright ©2012–2021

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Chengdu Ebyte Electronic Technology Co.,Ltd.

7

Chapter 5 Basic application

5.1 Basic circuit

Figure 5-1 circuit

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Содержание E49-900M20S

Страница 1: ...成都亿佰特电子科技有限公司 E49 900M20S 产品规格书 Copyright 2012 2021 Chengdu Ebyte Electronic Technology Co Ltd E49 900M20S User manual 868MHz 915MHz SMD wireless modules ...

Страница 2: ...rating parameter 4 Chapter 3 Size and pin definition 5 Chapter 4 Basic operation 6 4 1 Hardware design 6 4 2 Programming 6 Chapter 5 Basic application 7 5 1 Basic circuit 7 6 FAQ 8 6 1 Communication range is too short 8 6 2 Module is easy to damage 8 6 3 BER Bit Error Rate is high 8 7 Welding instruction 9 7 1 Reflow soldering temperature 9 7 2 Reflow soldering curve 9 8 Related products 10 9 Ante...

Страница 3: ...duction use modification or disclosure to third parties of this document or any part thereof without the express permission of EBYTE is strictly prohibited The information contained herein is provided as is and EBYTE assumes no liability for the use of the information No warranty either express or implied is given including but not limited with respect to the accuracy correctness reliability and f...

Страница 4: ...ce this module is a pure RF transceiver module using SPI interface needs MCU driver 1 2 Features The measured communication distance can reach 2 5km Maximum transmission power of 20dBm software multi level adjustable Supports ISM 868MHz 915MHz band Supports 0 5Kbps 300Kbps transmission rate Supports low power mode suitable for battery Supports GFSK modulation mode OOK G MSK Supports 2 6V 3 6V powe...

Страница 5: ... Power supply V 1 8 3 3 3 6 Voltage over 3 6V will cause permanent damage to module Communication level V 3 3 For 5V TTL it may be at risk of burning down Operating temperature 40 85 Industrial grade Operating frequency MHz 850 868 930 Power Consump tion TX current mA 75 TX power 20dBm RX current mA 8 5 Sleep current nA 300 300 800 Max TX power dBm 20 Receiving sensitivity dBm 116 117 118 Air data...

Страница 6: ...Ground 5 GPIO1 DI O Configurable multi function IO port see CMT2300A manual for details 6 GPIO2 DI O Configurable multi function IO port see CMT2300A manual for details 7 GPIO3 DI O Configurable multi function IO port see CMT2300A manual for details 8 VCC Power supply 3 3V 9 GND Ground 10 GND Ground 11 SCLK DI SPI clock pin 12 SDIO DI O SPI data pin 13 CSB DI SPI register accesser 14 FCSB DI SPI F...

Страница 7: ...part of the module and routed in the Bottom Layer Assuming the module is soldered or placed over the Top Layer it is wrong to randomly route over the Bottom Layer or other layers which will affect the module s spurs and receiving sensitivity to varying degrees It is assumed that there are devices with large electromagnetic interference around the module that will greatly affect the performance It ...

Страница 8: ...Chengdu Ebyte Electronic Technology Co Ltd E49 900M20S user manual Copyright 2012 2021 Chengdu Ebyte Electronic Technology Co Ltd 7 Chapter 5 Basic application 5 1 Basic circuit Figure 5 1 circuit ...

Страница 9: ...ransmitting power Due to antenna quality or poor matching between antenna and module 6 2 Module is easy to damage Please check the power supply source ensure it is between recommends voltage higher than the maximum will damage the module Please check the stability of power source the voltage cannot fluctuate too much Please make sure anti static measure are taken when installing and using high fre...

Страница 10: ...96 5 Ag3 Cu0 5 Preheat Temperature min Tsmin 100 150 Preheat temperature max Tsmax 150 200 Preheat Time Tsmin to Tsmax ts 60 120 sec 60 120 sec Average ramp up rate Tsmax to Tp 3 second max 3 second max Liquidous Temperature TL 183 217 Time tL Maintained Above TL 60 90 sec 30 90 sec Peak temperature Tp 220 235 230 250 Aveage ramp down rate Tp to Tsmax 6 second max 6 second max Time 25 to peak temp...

Страница 11: ...PI 9 Antenna guide 9 1 Antenna recommendation The antenna is an important role in the communication process A good antenna can largely improve the communication system Therefore we recommend some antennas for wireless modules with excellent performance and reasonable price Model No Type Frequency Gain Size Cable Interface Function feature Hz dBi mm cm TX868 JZLW 15 Rubber antenna 868M 3 165 IPEX 1...

Страница 12: ...cription Issued by 1 0 2021 5 31 Initial version Linson About us Technical support support cdebyte com Documents and RF Setting download link www ebyte com Thank you for using Ebyte products Please contact us with any questions or suggestions info cdebyte com Phone 86 028 61399028 Web www ebyte com Address B5 Mould Park 199 Xiqu Ave High tech District Sichuan China ...

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